A socket having a working end with a work piece aperture that is adapted to receive a work piece and an opposing drive end adapted to engage a torque application tool. The socket includes a biasing member adapted to apply a biased frictional force to the work piece received in the work piece aperture and including first and second opposing ends, where the first end is restricted from moving in the radial direction, and the second end includes a bent portion and is restricted from moving in the axial direction, and a groove formed in an internal surface of the work piece aperture. The bent portion engages the groove.

A socket having a working end with a work piece aperture that is adapted to receive a work piece and an opposing drive end adapted to engage a torque application tool. The socket includes a biasing member adapted to apply a biased frictional force to the work piece received in the work piece aperture and including first and second opposing ends, where the first end is restricted from moving in the radial direction, and the second end includes a bent portion and is restricted from moving in the axial direction, and a groove formed in an internal surface of the work piece aperture. The bent portion engages the groove.

A socket wrench is provided, including: a sleeving portion, including a sleeving hole disposed therethrough along a first direction; a connecting arm, extending from the sleeving portion in a direction lateral to the first direction; an operation rod; and a pin member, pinning the connecting arm and the operation rod in a direction non-perpendicular to the first direction so that the operation rod is rotatable about the pin member relative to the sleeving portion.

A socket wrench is provided, including: a sleeving portion, including a sleeving hole disposed therethrough along a first direction; a connecting arm, extending from the sleeving portion in a direction lateral to the first direction; an operation rod; and a pin member, pinning the connecting arm and the operation rod in a direction non-perpendicular to the first direction so that the operation rod is rotatable about the pin member relative to the sleeving portion.

An electric torque wrench capable of sensing a manual operating torque includes: an outer housing having an accommodating space at an internal thereof, a motor and a reduction device arranged therein; the reduction device having a reduction gear assembly with a hollow ring gear member; a front end of the ring gear member having at least one extension arm and at least one sensing plane formed thereon; a torque sensing unit arranged on the sensing plane; a driving device installed at the front end of the outer housing and having a working head arranged at the front end thereof; the extension arm of the ring gear member secured and attached onto the driving device. With the torque sensing unit installed on the extension arm, the electric torque wrench can be rotated manually with hand and is able to measure the torque value.

An electric torque wrench capable of sensing a manual operating torque includes: an outer housing having an accommodating space at an internal thereof, a motor and a reduction device arranged therein; the reduction device having a reduction gear assembly with a hollow ring gear member; a front end of the ring gear member having at least one extension arm and at least one sensing plane formed thereon; a torque sensing unit arranged on the sensing plane; a driving device installed at the front end of the outer housing and having a working head arranged at the front end thereof; the extension arm of the ring gear member secured and attached onto the driving device. With the torque sensing unit installed on the extension arm, the electric torque wrench can be rotated manually with hand and is able to measure the torque value.

An attaching and detaching tool for removing a flywheel connected to a crankshaft of an internal combustion engine using a nut, in which the flywheel is removed by pulling the flywheel with an axial force generated in the nut when the nut is loosened, is provided. A socket wrench is coupled to a nut connected to a crankshaft and a flywheel is coupled to a puller assembled to the socket wrench via a bolt, and then the socket wrench is rotated while the rotation of the puller is stopped by a spinner handle, whereby the nut is loosened and the flywheel is removed.

An attaching and detaching tool for removing a flywheel connected to a crankshaft of an internal combustion engine using a nut, in which the flywheel is removed by pulling the flywheel with an axial force generated in the nut when the nut is loosened, is provided. A socket wrench is coupled to a nut connected to a crankshaft and a flywheel is coupled to a puller assembled to the socket wrench via a bolt, and then the socket wrench is rotated while the rotation of the puller is stopped by a spinner handle, whereby the nut is loosened and the flywheel is removed.

A flexible magnetic socket holder is disclosed having a flexible elongated strip having a top wall, a bottom wall, a first side wall and a second side wall. The top wall has a plurality of posts each adapted to receive a socket and having an opening on each side of the posts for exposing a magnet. The bottom wall has a retaining member extending downwardly from the bottom wall and adapted to receive the magnet. The first side wall and the retaining member have an opening adapted to receive the magnet and retain the magnet by friction fit. The second side wall is adapted to retain the magnet in the retaining member. The magnet is inserted in the retaining member through the opening in the first side wall and the retaining member. The top wall of the flexible elongated strip is adapted to magnetically hold the sockets at each post and the bottom wall of the flexible elongated strip is adapted to magnetically attach to different shaped ferrous surfaces.

A grease fitting installation tool is disclosed. The grease fitting installation tool may include a hand tool useful for installing and uninstalling a grease fitting with a hexagonal collar, a threaded shank, and a nipple, i.e., a Zerk fitting. The hand tool may have a first tool head and a second tool head, each able to receive and manipulate a grease fitting. The first and second tool heads may be attached end to end, joining the heads in the center of a hand tool by a couple. The couple may have a wrench interface allowing the hand tool to be engaged by a wrench or other tool. Each tool head may include a hollow socket with a socket aperture and six internal contact surfaces that are hexagonally arranged. The tool head may also include a deformable, cylindrical gripping member disposed within the hollow socket for retaining the grease fitting when the grease fitting is inserted into the gripping member.